F02G

HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS steam engine plants, special vapour plants, plants operating on either hot gas or combustion-product gases together with other fluid F01K; gas-turbine plants F02C; jet-propulsion plants F02K

USE OF WASTE HEAT OF COMBUSTION ENGINES

NOT OTHERWISE PROVIDED FOR

Attention is drawn to the notes preceding class F01.

F02G1/00

Hot gas positive-displacement engine plants

F02G1/02

of open-cycle type

F02G1/04

of closed-cycle type

F02G1/043

the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines

F02G1/0435

the engine being of the free piston type

F02G1/044

having at least two working members, e.g. pistons, delivering power output

F02G1/0445

Engine plants with combined cycles, e.g. Vuilleumier

F02G1/045

Controlling

F02G1/047

by varying the heating or cooling

F02G1/05

by varying the rate of flow or quantity of the working gas

F02G1/053

Component parts or details

F02G1/0535

Seals or sealing arrangements

F02G1/055

Heaters or coolers

F02G1/057

Regenerators

F02G1/06

Controlling

F02G3/00

Combustion-product positive-displacement engine plants

F02G3/02

with reciprocating-piston engines

F02G5/00

Profiting from waste heat of combustion engines, not otherwise provided for

F02G5/02

Profiting from waste heat of exhaust gases

F02G5/04

in combination with other waste heat from combustion engines

F02G2242/00

Ericsson-type engines having open regenerative cycles controlled by valves

F02G2242/02

Displacer-type engines

F02G2242/04

having constant working volume

F02G2242/06

with external drive displacers

F02G2242/08

having gas actuated valves, e.g. "Bush engines"

F02G2242/10

having mechanically actuated valves, e.g. "Gifford" or "McMahon engines"

F02G2242/30

having variable working volume

F02G2242/32

Regenerative displacers with independent pistons

F02G2242/40

Piston-type engines

F02G2242/42

having a single piston regenerative displacer attached to the piston, e.g. "Gifford-McMahon" engines

F02G2242/44

having two pistons and reverse flow regenerators

F02G2243/00

Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes

F02G2243/02

having pistons and displacers in the same cylinder

F02G2243/04

Crank-connecting-rod drives

F02G2243/06

Regenerative displacers

F02G2243/08

External regenerators, e.g. "Rankine Napier" engines

F02G2243/20

each having a single free piston, e.g. "Beale engines"

F02G2243/202

resonant

F02G2243/204

non-resonant

F02G2243/206

externally excited

F02G2243/22

with oscillating cylinders

F02G2243/24

with free displacers

F02G2243/30

having their pistons and displacers each in separate cylinders two-piston machines F02G2244/00

F02G2243/32

Regenerative displacers having parallel cylinder, e.g. "Lauberau" or "Schwartzkopff" engines

F02G2243/34

Regenerative displacers having their cylinders at right angle, e.g. "Robinson" engines

F02G2243/36

with twin-expansion cylinders, e.g. "Rainbow" engines

F02G2243/38

External regenerators having parallel cylinders, e.g. "Heinrici" engines

F02G2243/40

with free displacers

F02G2243/50

having resonance tubes

F02G2243/52

acoustic

F02G2243/54

thermo-acoustic

F02G2244/00

Machines having two pistons

F02G2244/02

Single-acting two piston engines

F02G2244/04

of rotary cylinder type, e.g. "Finkelstein" engines

F02G2244/06

of stationary cylinder type

F02G2244/08

having parallel cylinder, e.g. "Rider" engines

F02G2244/10

having cylinders in V-arrangement

F02G2244/12

having opposed pistons

F02G2244/50

Double acting piston machines

F02G2244/52

having interconnecting adjacent cylinders constituting a single system, e.g. "Rinia" engines

F02G2244/54

having two-cylinder twin systems, with compression in one cylinder and expansion in the other cylinder for each of the twin systems, e.g. "Finkelstein" engines

F02G2250/00

Special cycles or special engines

F02G2250/03

Brayton cycles

F02G2250/06

Beau de Rochas constant volume cycles

F02G2250/09

Carnot cycles in general

F02G2250/12

Malone liquid thermal cycles

F02G2250/15

Sabathe mixed air cycles

F02G2250/18

Vuilleumier cycles

F02G2250/21

Cooke Yarborough engines

F02G2250/24

Ringbom engines, the displacement of the free displacer being obtained by expansion of the heated gas and the weight of the piston

F02G2250/27

Martini Stirling engines

F02G2250/31

Nano- or microengines

F02G2253/00

Seals

F02G2253/01

Rotary piston seals

F02G2253/02

Reciprocating piston seals

F02G2253/03

Stem seals

F02G2253/04

Displacer seals

F02G2253/06

Bellow seals

F02G2253/08

Stem with rolling membranes

F02G2253/10

Piston with rolling membranes

F02G2253/50

Liquid seals

F02G2253/60

Sealing of the lubrication circuit

F02G2253/80

Sealing of the crankcase

F02G2254/00

Heat inputs

F02G2254/05

by air

F02G2254/10

by burners

F02G2254/11

Catalytic burners

F02G2254/12

by ejectors

F02G2254/15

by exhaust gas

F02G2254/18

using deflectors, e.g. spirals

F02G2254/20

using heat transfer tubes

F02G2254/30

using solar radiation

F02G2254/40

using heat accumulators

F02G2254/45

by electric heating

F02G2254/50

Dome arrangements for heat input

F02G2254/60

using air preheaters

F02G2254/70

by catalytic conversion, i.e. flameless oxydation

F02G2254/90

by radioactivity

F02G2255/00

Heater tubes

F02G2255/10

dome shaped

F02G2255/20

Heater fins

F02G2256/00

Coolers

F02G2256/02

Cooler fins

F02G2256/04

Cooler tubes

F02G2256/50

with coolant circulation

F02G2257/00

Regenerators

F02G2257/02

rotating

F02G2258/00

Materials used

F02G2258/10

ceramic

F02G2258/20

having heat insulating properties

F02G2258/50

having frictional properties

F02G2258/80

having magnetic properties

F02G2258/90

Processing of materials

F02G2260/00

Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits

F02G2262/00

Recuperating heat from exhaust gases of combustion engines and heat from lubrication circuits

F02G2270/00

Constructional features

F02G2270/005

Shells, e.g. a sealed or sealing shell for a Stirling engine

F02G2270/02

Pistons for reciprocating and rotating

F02G2270/04

Roller assemblies connecting opposed pistons

F02G2270/10

Rotary pistons

F02G2270/15

Rotating cylinders

F02G2270/20

Plural piston swash plates

F02G2270/30

Displacer assemblies

F02G2270/40

Piston assemblies

F02G2270/42

Displacer drives

F02G2270/425

the displacer being driven by a four-bar mechanism, e.g. a rhombic mechanism

F02G2270/45

Piston rods

F02G2270/50

Crosshead guiding pistons

F02G2270/55

Cylinders

F02G2270/60

Counterweights for pistons

F02G2270/70

Liquid pistons

F02G2270/80

Engines without crankshafts

F02G2270/85

Crankshafts

F02G2270/90

Valves

F02G2270/95

Pressurised crankcases

F02G2275/00

Controls

F02G2275/10

for vibration reduction

F02G2275/20

for preventing piston over stroke

F02G2275/30

for proper burning

F02G2275/40

for starting

F02G2280/00

Output delivery

F02G2280/005

Medical applications, e.g. for prosthesis or artificial hearts

F02G2280/10

Linear generators

F02G2280/20

Rotary generators

F02G2280/50

Compressors or pumps

F02G2280/60

Heat pumps

F02G2280/70

Clutches

F02G2290/00

Engines characterised by the use of a particular power transfer medium, e.g. Helium